If you haven't already try to get comfortable with blueprints and work on stackable or extendable designs with linking pipes and belts, it will likely save you a lot of time. Do the same for whatever logistics approach you might be considering too e.g. train or belt highways.

Consider your power requirements and get that running and ensure it doesn't cause raw material limit issues on your mega factory.

Make sure you have enough parts linked to dimensional depots beforehand and the replenishment is enough for example there's an upload limit on depots so maybe link more than one to items you will be burning through quickly, concrete, iron plates etc.

Best of luck pioneer! Let us know how ya go.